Comparison

USA Unit Converter vs Aspen Compressor Controller

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

USA Unit Converter

Features
Read full description

Confused about measuring units in American videos? Traveling to Europe from the U.S.? USA Unit Converter is the best choice! The most convenient and quick way to convert from Imperial units to International system and vice versa. Create and customize widget for easy access to the most frequently used units. Why USA Unit Converter? – Speed. You don't need to waste time searching through the categories. You have access to all the units right after opening the app – Widget. Memorize units with our widgets. You can customize count of rows in a widget and frequency of unit updates – No limits. Enjoy all of the features for free with NO ADS

About

Aspen Compressor Controller

Monitor and adjust your compressor system's performance. This application connects to the Aspen Compressor Control Board to display real-time readings like speeds and temperatures, enabling optimized operation.

Highlights
  • Monitor compressor speeds
  • Display system temperatures
  • Control fan speeds
  • Optimize system performance
  • Connect to control board
Features
Read full description

Aspen Compressor's system controller allows users to easily monitor and control their systems by connecting to the Aspen Compressor Control Board. This app provides the ability to change and display system readings such as compressor speeds, temperatures, and fan speeds allowing for optimized system performance.

Screenshots

USA Unit Converter4 screens
Aspen Compressor Controller2 screens

Verdict

The call

The clearest difference is update cadence: Aspen Compressor Controller at every 2 months against USA Unit Converter's every 14 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

USA Unit Converter ships an update every 14 months, Aspen Compressor Controller every 2 months. The most recent releases landed on September 8, 2026 and June 11, 2026 respectively.

Scorecard1 real difference · 8 level
USA Unit Converter versus Aspen Compressor Controller: the parameters behind the verdict, then further details
ParameterUSA Unit ConverterAspen Compressor Controller
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 14 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better17.2
Further details — not scored
Size2 MB1 MB
Age rating4+4+
DeveloperAndrey SeleznevAspen Compressor, LLC

In-app purchases

None

USA Unit Converter

No in-app purchases

None

Aspen Compressor Controller

No in-app purchases

Questions

Is USA Unit Converter free?
USA Unit Converter is free to download, with no in-app purchases.
Is Aspen Compressor Controller free?
Aspen Compressor Controller is free to download, with no in-app purchases.
Do USA Unit Converter or Aspen Compressor Controller have ads?
Neither USA Unit Converter nor Aspen Compressor Controller shows ads.
Which is updated more often, USA Unit Converter or Aspen Compressor Controller?
USA Unit Converter ships an update every 14 months, and Aspen Compressor Controller every 2 months. Most recently, USA Unit Converter was updated on September 8, 2026 and Aspen Compressor Controller on June 11, 2026.

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